Improvement in ax-bit-blank machines



3 Sheets-fSheet 1.

iAx* B11 Blank Machines.

Patented lune 20,1871.

Y No. 116,011.

` 3 `SheetsnSheet 2.

E. BARTHOLOMEW.

` Ax Bit Blank Machin-es.

NO. HJL I' PatentedJuneQ-OJSH.

-across the said side.

UNITED STATES PATENT OFFICE.

ENosz BARTEoLoMEw, or MILL HALL, PENNSYLVANIA.

IMPROVEMENT IN AX`BITBLANK MAC'HINES.

Specification forming part of Letters Patent No. 116,011, dated June 20,1871. l

` To all whom itvmay concern.-

Be it known that 1, ENos 'BAETHOLOMEW of Mill Hall, in the county ofClinton and Sta-te of Pennsylvania, have invented a new and ImprovedAx-Bit-Blank Machine; Aand I dohereby declare that the following-isafull, clear, and exact description thereof, which will enable othersskilled in theart to make and use the same, reference being had to theaccompanying drawing forming part of this specification.

This invention relates to anew and improved machine for cutting andvshaping the ax-bit a cross-section of the bar from which the blanks areto be cut, and Fig. 6 is au end view of one f of the blanks after beingcut and shaped.

Similar letters of reference indicate corresponding parts. l

A is a vertically-reciprocating cross-head,

i Working between guides B by a drivin g-shaft,

C, in any suitable or approved way. This crosshea-d carries a cutter, D,which works in connection with the iix'ed cutter E on the ,bed F ofthemachine, to out the blanks from the bar fed along over the said fixedcutter against gauges G, which stop .it when fed in beyond the cuttersEthelength required for the blank. This fixed cutter is shaped in itsupper edge to correspond with the irregular side H of the bar to be cut,so that the latter will bear on it alike I is a gauge or stop applied tothe cutter E to assistthe attendant in placing the bar on the latterproperly. The cut blank falls upon the carriers K between the verticalhinged plates L, and is carried back a short distance over the sides Mofn a female die, O, and under a broad punch, P, forforcin g it throughthe die for turning the edges up, as indicated in Fig. 6, the said punchhaving the' sameshape as the air-pole, to which the bit is to be fitted.The said carriers K consist of two prongs projecting from plate Q., oneon each side of the female die. The blank felis en them so as to rest byeach .edge on them. They lie under the blank when the punching begins,but

the bending of the blank over the raised ribs J I of the parts M of the'die draws the blank from them'to the die. I intend to make these ribs Jdetachable for removing them readily for repairs. The plate Q, to whichthe carriers are attached, works toward and from the fixed cutter inguides R on the bed of the machine. It has' a hole, S, with wallsoblique to the top,

tlroughwhich a bent bar, T, attached to thel bars V attached to thecross-head, and working in the holes W, having the projections X, be,-

. tween which and one end wall the curved ribs Y of said bars work tomove the said compressors. These parts are so arranged that as soon asthe blank yhas been forced down through the female die, and before'it isdischarged from the punch, also before the latter arrives at the end ofits downward movement, they are brought. against the sides of theturned-up parts Y and compress them hard against the punch to give themthe same bevel on the outside they have on the inside, and reduce theupper edges down thin, and cause them to fit snugly7 and with eX-actness' against the punch, so that when placed on the aX-pole they willit in like manner and exclude. the cinder and other foreign matter whilein the lire, thereby insuring a morev perfeet weld than when they iitthe pole loosely. The hinged plates L are mounted in supports on plateQ, and provided with set-screws L for `setting them inward more or less,and-are for l causingV the blank to be properly centered with the die O,and to be adjusted for-wide or narrow blanks.- The gauges are madeadjustable on the movable plate Q by a set-screw, A', as shown, forvarying them 'for longer or shorter blanks, .as required, and are movedback and forth by th'e said plate. 1?1 and B? represent a movable andxed cutter, employed in connection with the crossnhead and bed fortrimming` the endsof the bars, or for other purposes.

The sliding,l plate Q and the compressors may be operated by any othersuitable means; but I prefer the means here shown, as the construe tionis simple and cheap. The hole Sin the plate Q may have frictiolrrollersarranged in it to take the Wear out of the bent rod T, and the saidrollers may be adjustable and removable.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. The combination of the cutters D E, oar ricrs K,punch P, and die 0, substantially as specified.

2. The compressors, arranged and operated in oonnection with the broadpunch and female die, for the purpose of beveling` the steel ends withfemale die, broad punch, and compressors,

as and for the purpose specified.

5. The combination, with the cross-head and the movable plate, of thebent bar T, said bar Working in the oblique hole S in said plate,substantially as specified.

6. The combination, with the compressors having the holes W andprojections X, of the bars Z attached to the cross-head, and having thecurved ribs Y, substantially as specified.

ENOS BARTHOLOMEW.

Witnesses S. B. DARRAH, H. BARTHOLOMEW.

